Authors:

Alexandre Belloni
Duke University:
 The Fuqua School of Business
1 Towerview Drive
Durham, NC 27708
abn5'at'duke.edundre Belloni


The author: Katya Scheinberg,
address:  IBM T.J. Watson Research Center,
          1101 Kitchawan Rd., Yorktown Heights, 
          10598, NY
email:    katyascheinberg'at'gmail.com
   